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boards: silabs: Add support for xg22_ek2710a (EFR32xG22E Explorer Kit)
Signed-off-by: James Smith <james@loopj.com>
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‎boards/silabs/dev_kits/xg22_ek2710a/Kconfig.defconfig

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# Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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if BOARD_XG22_EK2710A
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config LOG_BACKEND_SWO_FREQ_HZ
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default 875000
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depends on LOG_BACKEND_SWO
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if SOC_GECKO_USE_RAIL
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config FPU
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default y
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endif # SOC_GECKO_USE_RAIL
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if BT
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config FPU
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default y
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config COMMON_LIBC_MALLOC_ARENA_SIZE
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default 8192
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config MAIN_STACK_SIZE
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default 3072 if PM
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default 2304
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endif # BT
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endif # BOARD_XG22_EK2710A

‎boards/silabs/dev_kits/xg22_ek2710a/Kconfig.xg22_ek2710a

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# Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_XG22_EK2710A
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select SOC_PART_NUMBER_EFR32MG22E224F512IM40

‎boards/silabs/dev_kits/xg22_ek2710a/board.cmake

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# Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(jlink "--device=EFR32MG22C224F512IM40" "--reset-after-load")
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
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board_runner_args(silabs_commander "--device=EFR32MG22E224F512IM40")
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include(${ZEPHYR_BASE}/boards/common/silabs_commander.board.cmake)

‎boards/silabs/dev_kits/xg22_ek2710a/board.yml

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board:
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name: xg22_ek2710a
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full_name: EFR32xG22 Explorer Kit (xG22-EK2710A)
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vendor: silabs
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socs:
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- name: efr32mg22e224f512im40

‎boards/silabs/dev_kits/xg22_ek2710a/doc/index.rst

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.. zephyr:board:: xg22_ek2710a
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Overview
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********
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The EFR32xG22E Explorer Kit (xG22-EK2710A) contains
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a Wireless System-On-Chip from the EFR32MG22 family built on an
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ARM Cortex®-M33 processor with excellent low power capabilities.
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Hardware
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********
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- EFR32MG22E224F512IM40 Mighty Gecko SoC
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- CPU core: ARM Cortex®-M33 with FPU
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- Flash memory: 512 kB
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- RAM: 32 kB
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- Transmit power: up to +6 dBm
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- Operation frequency: 2.4 GHz
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- Crystal for HFXO (38.4 MHz)
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For more information about the EFR32MG22 SoC and BRD2710A board, refer to these
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documents:
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- `EFR32MG22 Website`_
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- `EFR32MG22E Datasheet`_
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- `EFR32xG22 Reference Manual`_
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- `BRD2710A User Guide`_
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Supported Features
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==================
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.. zephyr:board-supported-hw::
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Connections and IOs
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===================
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In the following table, the column **Name** contains Pin names. For example, PA2
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means Pin number 2 on PORTA, as used in the board's datasheets and manuals.
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+-------+-------------+-------------------------------------+
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| Name | Function | Usage |
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+=======+=============+=====================================+
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| PA4 | GPIO | LED0 |
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+-------+-------------+-------------------------------------+
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| PC7 | GPIO | Push Button 0 |
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+-------+-------------+-------------------------------------+
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| PA5 | USART1_TX | UART Console VCOM_TX US0_TX |
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+-------+-------------+-------------------------------------+
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| PA6 | USART1_RX | UART Console VCOM_RX US0_RX |
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+-------+-------------+-------------------------------------+
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The default configuration can be found in
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:zephyr_file:`boards/silabs/dev_kits/xg22_ek2710a/xg22_ek2710a_defconfig`
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System Clock
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============
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The EFR32MG22E SoC is configured to use the 38.4 MHz external oscillator on the
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board, and can operate a clock speeds of up to 76.8 MHz.
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Serial Port
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===========
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The EFR32MG22E SoC has two USARTs and one EUART.
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USART1 is connected to the board controller and is used for the console.
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Programming and Debugging
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*************************
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.. zephyr:board-supported-runners::
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.. note::
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Before using the kit the first time, you should update the J-Link firmware
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in Simplicity Studio.
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Flashing
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========
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The sample application :zephyr:code-sample:`hello_world` is used for this example.
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Build the Zephyr kernel and application:
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: xg22_ek2710a
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:goals: build
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Connect the xg22_ek2710a to your host computer using the USB port and you
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should see a USB connection.
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Open a serial terminal (minicom, putty, etc.) with the following settings:
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- Speed: 115200
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- Data: 8 bits
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- Parity: None
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- Stop bits: 1
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Reset the board and you'll see the following message on the corresponding serial port
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terminal session:
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.. code-block:: console
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Hello World! xg22_ek2710a/efr32mg22e224f512im40
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Bluetooth
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=========
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To use the BLE function, run the command below to retrieve necessary binary
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blobs from the SiLabs HAL repository.
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.. code-block:: console
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west blobs fetch hal_silabs
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Then build the Zephyr kernel and a Bluetooth sample with the following
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command. The :zephyr:code-sample:`bluetooth_observer` sample application is used in
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this example.
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.. zephyr-app-commands::
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:zephyr-app: samples/bluetooth/observer
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:board: xg22_ek2710a
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:goals: build
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.. _EFR32MG22 Website:
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https://www.silabs.com/wireless/zigbee/efr32mg22-series-2-socs#
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.. _EFR32MG22E Datasheet:
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https://www.silabs.com/documents/public/data-sheets/efr32mg22e-datasheet.pdf
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.. _EFR32xG22 Reference Manual:
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https://www.silabs.com/documents/public/reference-manuals/efr32xg22-rm.pdf
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.. _BRD2710A User Guide:
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https://www.silabs.com/documents/public/user-guides/ug582-brd2710a-user-guide.pdf

‎boards/silabs/dev_kits/xg22_ek2710a/xg22_ek2710a-pinctrl.dtsi

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/*
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* Copyright The Zephyr Project Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/pinctrl/silabs/xg22-pinctrl.h>
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&pinctrl {
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itm_default: itm_default {
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group0 {
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pins = <GPIO_SWV_PA3>;
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drive-push-pull;
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output-high;
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};
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};
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i2c0_default: i2c0_default {
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group0 {
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pins = <I2C0_SCL_PD2>, <I2C0_SDA_PD3>;
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bias-pull-up;
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drive-open-drain;
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};
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};
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pti_default: pti_default {
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group0 {
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pins = <PTI_DOUT_PC4>, <PTI_DFRAME_PC5>;
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drive-push-pull;
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output-high;
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};
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};
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usart1_default: usart1_default {
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group0 {
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pins = <USART1_TX_PA5>;
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drive-push-pull;
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output-high;
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};
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group1 {
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pins = <USART1_RX_PA6>;
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input-enable;
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silabs,input-filter;
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};
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};
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};

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